Over a year ago I posed a question to Snow performance about water injection enabling a moderately boosted car to run on 87 octane. If you read the articles it seem it could work. I would never do this on a pullied car, but if you can run 19-22 on 93 you should be able to run 87 on 10-12. I posed this question for my daily driver Terminator.
No response from Snow.